Mumbai weather in September
September in Mumbai: sweltering, soaked, with very humid — one of the weakest months to visit.
#11 of 12 months in Mumbai · #585 of 604 destinations to visit in September · comfort 44/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Mumbai climate normals — September
| Daytime high | 28°C / 83°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 25°C / 78°F | |
| Feels like (high) | 34°C / 93°F | |
| Rainfall | 480 mm / 18.9 in | ⛈ soaked |
| Rainy days | 28 days | |
| Humidity | 88% | 💦 very humid |
| Dew point | 25°C / 76°F | |
| Sunshine | 7.1 h/day | |
| Daylight | 12.2 h | |
| Wind | 17 km/h / 10 mph | |
| Air quality (US AQI) | 65 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Mumbai in September — FAQ
- Is September a good time to visit Mumbai?
- September in Mumbai: sweltering, soaked, with very humid — one of the weakest months to visit. It ranks #11 of 12 months for Mumbai on SeasonMap's comfort score (44/100).
- What is the weather like in Mumbai in September?
- In September, Mumbai averages a daily high of 28.4°C and a low of 25.4°C, with about 479.7 mm of rain over roughly 27.6 rainy days.
- What is the air quality in Mumbai in September?
- Mumbai has a mean US Air Quality Index of about 65 in September.